High
Discourse allows self-XSS through malicious composer message
Type: advisorySources: OSV
Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the `stable` branch and versions 2.9.0.beta11 and prior on the `beta` and `tests-passed` branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2022-46148
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 13:42 UTC · Revision 1
Source evidence
Discourse allows self-XSS through malicious composer message
core-osv · Original sourcePublished 29 Nov 2022, 00:00 UTC
Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the `stable` branch and versions 2.9.0.beta11 and prior on the `beta` and `tests-passed` branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.
osv:CVE-2022-46148
Complete source record
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"id": "a4cad145b9eb4f4289acc9ae138be1276642e260f6e1d4af96db78233c69b942",
"url": "https://osv.dev/vulnerability/CVE-2022-46148",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Discourse allows self-XSS through malicious composer message",
"summary": "Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the `stable` branch and versions 2.9.0.beta11 and prior on the `beta` and `tests-passed` branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.",
"evidence": "osv:CVE-2022-46148",
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"GHSA-c5h6-6gg5-84fh"
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"modified": "2026-10-28T02:30:36.306069562Z",
"provider": "osv",
"references": [
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}